I travel quite a bit but I have never seen this (to this extent) before.
I’m flying from SCL to IPT round trip. Google flights showed the price for $970 round trip. However. Once going to the carriers website (Latam), the price is actually \~$1700-$2000 round trip for business. The \~$900 displayed price was for one leg. I used a laptop and the app to see if I could get the $1000 fare, both nearly $2k.
Not sure how but a link to the Spanish language/Chilean currency site popped up. Did NOT use a VPN.
If I pay in Chilean Pesos the price is under $1000 round trip business class. Of course I booked it.
I’ve tried VPN switch before but never really found a drastic change, especially like this.